Debug Info: Prepare DebugLocEntry to handle more than a single value per
entry. This is in preparation for generic DW_OP_piece support.
No functional change so far.

http://reviews.llvm.org/D3373
rdar://problem/15928306

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207368 91177308-0d34-0410-b5e6-96231b3b80d8
Debug info: Refactor EmitDwarfRegOpPiece to be a member function of
AsmPrinter.
No functional change.

http://reviews.llvm.org/D3373
rdar://problem/15928306

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207369 91177308-0d34-0410-b5e6-96231b3b80d8